// --------------------------------------------------------------------------------------------------------------------
// <copyright file="TypeDescriptorProvider.ConfigurationField.cs" company="Open Trader">
//   Copyright (c) David Denis (david.denis@systemathics.com)
// </copyright>
// <summary>
//   |  Open Trader - The Open Source Systematic Trading Platform
//   |
//   |  This program is free software: you can redistribute it and/or modify
//   |  it under the terms of the GNU General Public License as published by
//   |  the Free Software Foundation, either version 2 of the License, or
//   |  (at your option) any later version.
//   |
//   |  This program is distributed in the hope that it will be useful,
//   |  but WITHOUT ANY WARRANTY; without even the implied warranty of
//   |  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//   |  GNU General Public License for more details.
//   |
//   |  You should have received a copy of the GNU General Public License
//   |  along with this program.  If not, see http://www.gnu.org/licenses
//   |
//   |  Up to date informations about Open Trader can be found at :
//   |    http://opentrader.org
//   |    http://opentrader.codeplex.com
//   |
//   |  For professional services, please visit us at :
//   |    http://www.systemathics.com
// </summary>
// --------------------------------------------------------------------------------------------------------------------

namespace Org.OpenTrader.Framework.UI.Forms
{
    #region Using Directives

    using System;
    using System.ComponentModel;
    using System.Drawing.Design;
    using System.Globalization;

    using Org.OpenTrader.Framework.LiveObjects;

    #endregion

    /// <summary>
    /// The configuration resource type description provider.
    /// </summary>
    public class ConfigurationFieldTypeDescriptionProvider : TypeDescriptionProvider
    {
        #region Public Methods

        /// <summary>
        /// The get type descriptor.
        /// </summary>
        /// <param name="objectType">
        /// The object type.
        /// </param>
        /// <param name="instance">
        /// The instance.
        /// </param>
        /// <returns>
        /// </returns>
        public override ICustomTypeDescriptor GetTypeDescriptor(Type objectType, object instance)
        {
            return new TypeDescriptor();
        }

        #endregion

        /// <summary>
        /// The converter.
        /// </summary>
        internal class Converter : StringConverter
        {
            #region Public Methods

            /// <summary>
            /// The convert to.
            /// </summary>
            /// <param name="context">
            /// The context.
            /// </param>
            /// <param name="culture">
            /// The culture.
            /// </param>
            /// <param name="value">
            /// The value.
            /// </param>
            /// <param name="destinationType">
            /// The destination type.
            /// </param>
            /// <returns>
            /// The convert to.
            /// </returns>
            public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
            {
                if (!(value is ConfigurationField))
                {
                    return value;
                }

                var resource = value as ConfigurationField;
                if (!resource.IsSet)
                {
                    return Constants.NotSet;
                }

                return resource.Contents.ToString();
            }

            #endregion
        }

        /// <summary>
        /// The type descriptor.
        /// </summary>
        internal class TypeDescriptor : CustomTypeDescriptor
        {
            #region Public Methods

            /// <summary>
            /// The get converter.
            /// </summary>
            /// <returns>
            /// </returns>
            public override TypeConverter GetConverter()
            {
                return new Converter();
            }

            #endregion
        }
    }
}